linux-kernel - Re: [PATCH 25/64] ide: use standard timing for XFER_PIO_SLOW mode in ide_timing

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Message-ID: <4B560B41.6080205@ru.mvista.com>
Date:	Tue, 19 Jan 2010 22:42:57 +0300
From:	Sergei Shtylyov <sshtylyov@...mvista.com>
To:	Bartlomiej Zolnierkiewicz <bzolnier@...il.com>
Cc:	David Miller <davem@...emloft.net>, linux-ide@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH 25/64] ide: use standard timing for XFER_PIO_SLOW mode
 in ide_timing_compute()

Hello.

Bartlomiej Zolnierkiewicz wrote:

>>> From: Bartlomiej Zolnierkiewicz <bzolnier@...il.com>
>>> Subject: [PATCH] ide: use standard timing for XFER_PIO_SLOW mode in ide_timing_compute()
>>>
>>> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@...il.com>
>>>       
>> Applied.
>>     
>
> Thanks.
>
> Here is a bonus fixup for a small issue noticed by Sergei yesterday.
>
> From: Bartlomiej Zolnierkiewicz <bzolnier@...il.com>
> Subject: [PATCH] ide: ide_timing_compute() fixup
>
> XFER_SW_DMA_0 mode should be excluded from the extended cycle
> timing computations.
>
> [ This is just a documentation fix -- code inside the affected
>   'if' block already makes sure to accept only PIO modes. ]
>
> Noticed-by: Sergei Shtylyov <sshtylyov@...mvista.com>
> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@...il.com>
> ---
>  drivers/ide/ide-timings.c |    2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
>
> Index: b/drivers/ide/ide-timings.c
> ===================================================================
> --- a/drivers/ide/ide-timings.c
> +++ b/drivers/ide/ide-timings.c
> @@ -166,7 +166,7 @@ int ide_timing_compute(ide_drive_t *driv
>  	if (id[ATA_ID_FIELD_VALID] & 2) {	/* EIDE drive */
>  		memset(&p, 0, sizeof(p));
>  
> -		if (speed >= XFER_PIO_0 && speed <= XFER_SW_DMA_0) {
> +		if (speed >= XFER_PIO_0 && speed < XFER_SW_DMA_0) {
>  			if (speed <= XFER_PIO_2)
>  				p.cycle = p.cyc8b = id[ATA_ID_EIDE_PIO];
>  			else if ((speed <= XFER_PIO_4) ||
>   

   But shouldn't this just be merged to "ide: use standard timing for 
XFER_PIO_SLOW mode in ide_timing_compute()" since it's the patch that 
introduced that check?

MBR, Sergei

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